Power Supplies Explained

2nd Edition

By Paul Lee, G3ZKO

**** Shipping Early November 2025 onwards ****

Many amateurs often don't think of power supplies beyond the fact that they are boxes that provides stable DC voltage at the flick of a switch. Not surprisingly, there is much more going on and Paul Lee, G3ZKO explains exactly what is happening in the wide range of power supplies available and what are the best choices for given applications.

This new edition of what has become an internationally critically acclaimed best seller has been updated to bring you clearer explanations and expanded content. This includes a description of the current favoured method for high-efficiency power factor correction, the 'Totem Pole PFC' circuit, more details about the latest wide band-gap semiconductors and even a short section on digital control of power supplies.

Readers will find chapters that include descriptions of 'linear' supplies and a wide range of 'switched-mode' types from simple buck converters to the latest off-line high-efficiency topologies. The worked examples are based around typical radio amateur requirements and in many cases are versions of commercial products that the author has successfully designed. There are also chapters on magnetics theory, control loops, EMC, practical construction techniques, test equipment and much more. High voltage power supplies are included with comprehensive guidance on safety.

Power Supplies Explained - 2nd Edition sets out to dispel the mystery of power supplies and even encourage readers to have a go with their own designs. This book is recommended as both a useful reference source and a fascinating guide to this intriguing topic.

Size 240x174mm, 328 pages, ISBN: 9781913995836